// let [a,b,c]=[10,20,30]
// console.log(a,b,c);
// let a=10;
// let b=20
// [a,b]=[b,a]
// console.log(a,b);
const user={
    username:'zs',
    age:18
}
let{username:name,age}=user
console.log(name);